711/BuguLive/Class/General/Category/NSString/NSString+Common.m

//
//  NSString+Common.m
//  
//
//  Created by Alexi on 12-11-5.
//  Copyright (c) 2012年 . All rights reserved.
//

#import "NSString+Common.h"
#import <CommonCrypto/CommonDigest.h>
#import "NSData+Common.h"
#import "GTMBase64.h"

#define HANZI_START 19968
#define HANZI_COUNT 20902

static char firstLetterArray[HANZI_COUNT] =
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"xy";

char pinyinFirstLetter(unsigned short hanzi)
{
	int index = hanzi - HANZI_START;
	if (index >= 0 && index <= HANZI_COUNT)
	{
		return firstLetterArray[index];
	}
	else
	{
		return '[';
	}
}



@implementation NSString (Common)

+ (NSString *)md5String:(NSString *)str;
{
    const char *cStr = [str UTF8String];
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5(cStr, (uint32_t)strlen(cStr), result);
    return [NSString stringWithFormat:
            @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
            result[0], result[1], result[2], result[3], result[4], result[5], result[6], result[7],
            result[8], result[9], result[10], result[11], result[12], result[13], result[14], result[15]
            ];

}

- (NSString *)md5
{
    return [NSString md5String:self];
}

- (NSString *)firstPinYin
{
    if ([self length] == 0) {
        return [NSString stringWithFormat:@"%c",'['];
    }
    
    if ([self canBeConvertedToEncoding:NSASCIIStringEncoding]) {//it is english words
        return [self substringToIndex:1];
    }
    
    unichar ch = [self characterAtIndex:0];
    char firstPinYin = ch;
    if (ch < 'A' || ch > 'z' || (ch > 'Z' && ch < 'a') ) {
        firstPinYin = pinyinFirstLetter(ch);
    }
    
    return [NSString stringWithFormat:@"%c",firstPinYin];
}


#pragma mark - Utils
+ (BOOL)isEmpty:(NSString *)string
{
    return string == nil || string.length == 0;
}

- (BOOL)isWhitespaceAndNewlines
{
	NSCharacterSet* whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet];
	for (NSInteger i = 0; i < self.length; ++i)
    {
		unichar c = [self characterAtIndex:i];
		if (![whitespace characterIsMember:c])
        {
			return NO;
		}
	}
	return YES;
}

- (NSString *)trim
{
    return [self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}

- (NSString *)removeWhiteSpace
{
	return [[self componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] componentsJoinedByString:@""];
}

- (NSString *)removeNewLine
{
    return [[self componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]] componentsJoinedByString:@""];
}

- (NSString *)stringByUrlEncoding
{
	NSString *url = (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(NULL,  (CFStringRef)self,  NULL,  (CFStringRef)@"?!@#$^&%*+,:;='\"`<>()[]{}/\\| ",  kCFStringEncodingUTF8));

    return CommonReturnAutoReleased(url);
}

- (NSString *)capitalize
{
    if (self == nil || [self length] == 0) return self;
    return [[self substringToIndex:1].uppercaseString stringByAppendingString:[self substringFromIndex:1]];
}

- (BOOL)startsWith:(NSString *)str
{
	return [self startsWith:str Options:NSCaseInsensitiveSearch];
}

- (BOOL)startsWith:(NSString *)str Options:(NSStringCompareOptions)compareOptions
{
	return (str != nil) && ([str length] > 0) && ([self length] >= [str length])
	&& ([self rangeOfString:str options:compareOptions].location == 0);
}

- (BOOL)endsWith:(NSString *)str
{
	return [self endsWith:str Options:NSCaseInsensitiveSearch];
}

- (BOOL)endsWith:(NSString *)str Options:(NSStringCompareOptions)compareOptions
{
	return (str != nil) && ([str length] > 0) && ([self length] >= [str length])
	&& ([self rangeOfString:str options:(compareOptions | NSBackwardsSearch)].location == ([self length] - [str length]));
}

- (BOOL)containsString:(NSString *)str
{
	return [self containsString:str Options:NSCaseInsensitiveSearch];
}

- (BOOL)containsString:(NSString *)str Options:(NSStringCompareOptions)compareOptions
{
	return (str != nil) && ([str length] > 0) && ([self length] >= [str length]) && ([self rangeOfString:str options:compareOptions].location != NSNotFound);
}

- (BOOL)equalsString:(NSString *)str
{
	return (str != nil) && ([self length] == [str length]) && ([self rangeOfString:str options:NSCaseInsensitiveSearch].location == 0);
}

#pragma mark XML Extensions
+ (NSString *)encodeXMLCharactersIn:(NSString *)source
{
    if (![source isKindOfClass:[NSString class]] || !source)
    {
        return @"";
	}
    
    NSString *result = [NSString stringWithString:source];
	
    if ([result rangeOfString:@"&"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&"] componentsJoinedByString:@"&amp;"];
	}
    
    if ([result rangeOfString:@"<"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"<"] componentsJoinedByString:@"&lt;"];
	}
    
    if ([result rangeOfString:@">"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@">"] componentsJoinedByString:@"&gt;"];
    }
	
    if ([result rangeOfString:@"\""].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"\""] componentsJoinedByString:@"&quot;"];
    }
	
    if ([result rangeOfString:@"'"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"'"] componentsJoinedByString:@"&apos;"];
	}
    
    return result;
}

+ (NSString *)decodeXMLCharactersIn:(NSString *)source
{
    if (![source isKindOfClass:[NSString class]] || !source)
    {
        return @"";
	}
    
    NSString *result = [NSString stringWithString:source];
	
    if ([result rangeOfString:@"&amp;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&amp;"] componentsJoinedByString:@"&"];
	}
    
    if ([result rangeOfString:@"&lt;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&lt;"] componentsJoinedByString:@"<"];
    }
	
    if ([result rangeOfString:@"&gt;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&gt;"] componentsJoinedByString:@">"];
	}
    
    if ([result rangeOfString:@"&quot;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&quot;"] componentsJoinedByString:@"\""];
	}
    
    if ([result rangeOfString:@"&apos;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&apos;"] componentsJoinedByString:@"'"];
	}
    
    if ([result rangeOfString:@"&nbsp;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&nbsp;"] componentsJoinedByString:@" "];
	}
    
    if ([result rangeOfString:@"&#8220;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&#8220;"] componentsJoinedByString:@"\""];
    }
	
    if ([result rangeOfString:@"&#8221;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&#8221;"] componentsJoinedByString:@"\""];
	}
    
	if ([result rangeOfString:@"&#039;"].location != NSNotFound)
    {
        result = [[result componentsSeparatedByString:@"&#039;"] componentsJoinedByString:@"'"];
    }
    return result;
}

/**
 compare two version
 @param sourVersion *.*.*.*
 @param desVersion *.*.*.*
 @returns No,sourVersion is less than desVersion; YES, the statue is opposed
 */
+ (BOOL)compareVerison:(NSString *)sourVersion withDes:(NSString *)desVersion
{
    NSArray * sourArr = [sourVersion componentsSeparatedByString:@"."];
    NSArray * desArr = [desVersion componentsSeparatedByString:@"."];
    int sourInt, desInt;
    NSMutableString * sourStr = [[NSMutableString alloc] init];
    NSMutableString * desStr = [[NSMutableString alloc] init];
    
    if ([sourArr count] < [desArr count])
    {
        return YES;
    }
    else
    {
        
    }
    
    for (int i = 0; i < [sourArr count]; i ++)
    {
        [sourStr appendFormat:@"%@", [sourArr objectAtIndex:i]];
        [desStr appendFormat:@"%@", [desArr objectAtIndex:i]];
    }
    sourInt = [sourStr intValue];
    desInt = [desStr intValue];
    if (sourInt < desInt)
    {
        return YES;
    }
    else
    {
        return NO;
    }
    return NO;
    
}

#pragma mark - hashing
- (NSString *)base64Encoding
{
	NSData *stringData = [self dataUsingEncoding:NSUTF8StringEncoding];
	NSString *encodedString = [GTMBase64 stringByEncodingData:stringData];
	
	return encodedString;
}

///////////////////////////////////////////////////////////////////////////////////////////////////
/**
 * Calculate the md5 hash using CC_MD5.
 *
 * @returns md5 hash of this string.
 */
- (NSString*)md5Hash
{
	return [[self dataUsingEncoding:NSUTF8StringEncoding] md5Hash];
}


///////////////////////////////////////////////////////////////////////////////////////////////////
/**
 * Calculate the SHA1 hash using CommonCrypto CC_SHA1.
 *
 * @returns SHA1 hash of this string.
 */
- (NSString*)sha1Hash
{
	return [[self dataUsingEncoding:NSUTF8StringEncoding] sha1Hash];
}

- (NSString *)valueOfLabel:(NSString *)label
{
    NSError *error = nil;
    
    NSString *reg = [NSString stringWithFormat:@"(?<=%@\\>).*(?=</%@)", label, label];
    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:reg options:0 error:&error];
    
    if (regex != nil)
    {
        NSTextCheckingResult *firstMatch = [regex firstMatchInString:self options:0 range:NSMakeRange(0, [self length])];
        
        if (firstMatch)
        {
            NSRange resultRange = [firstMatch rangeAtIndex:0];
            
            //从urlString当中截取数据
            NSString *result = [self substringAtRange:resultRange];
            return result;
        }
    }
    
    return nil;
}

- (NSString *)substringAtRange:(NSRange)rang
{
    if ([NSString isEmpty:self])
    {
        return nil;
    }
    
    if (rang.location > self.length)
    {
        return nil;
    }
    
    if (rang.location + rang.length > self.length)
    {
        return nil;
    }
    
    return [self substringWithRange:rang];
}

- (NSString *)emjoiText
{
    if (self.length)
    {
    
        NSData *data = [self dataUsingEncoding:NSNonLossyASCIIStringEncoding];
        NSString *valueUnicode = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        NSData *dataa = [valueUnicode dataUsingEncoding:NSUTF8StringEncoding];
        NSString *valueEmoj = [[NSString alloc] initWithData:dataa encoding:NSNonLossyASCIIStringEncoding];
        return valueEmoj;
    }
    else
    {
        return self;
    }

}

- (NSUInteger)utf8Length
{
    size_t length = strlen([self UTF8String]);
    return length;
}

- (BOOL)isContainsEmoji;
{
    __block BOOL returnValue = NO;
    
    [self enumerateSubstringsInRange:NSMakeRange(0, [self length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
        const unichar hs = [substring characterAtIndex:0];
        if (0xd800 <= hs && hs <= 0xdbff)
        {
            if (substring.length > 1)
            {
                const unichar ls = [substring characterAtIndex:1];
                const int uc = ((hs - 0xd800) * 0x400) + (ls - 0xdc00) + 0x10000;
                if (0x1d000 <= uc && uc <= 0x1f77f)
                {
                    returnValue = YES;
                }
            }
        }
        else if (substring.length > 1)
        {
            const unichar ls = [substring characterAtIndex:1];
            if (ls == 0x20e3)
            {
                returnValue = YES;
            }
        }
        else
        {
            if (0x2100 <= hs && hs <= 0x27ff)
            {
                returnValue = YES;
            }
            else if (0x2B05 <= hs && hs <= 0x2b07)
            {
                returnValue = YES;
            }
            else if (0x2934 <= hs && hs <= 0x2935)
            {
                returnValue = YES;
            }
            else if (0x3297 <= hs && hs <= 0x3299)
            {
                returnValue = YES;
            }
            else if (hs == 0xa9 || hs == 0xae || hs == 0x303d || hs == 0x3030 || hs == 0x2b55 || hs == 0x2b1c || hs == 0x2b1b || hs == 0x2b50)
            {
                returnValue = YES;
            }
        }
        
        *stop = returnValue;
    }];
    
    return returnValue;
}

//递归计算符合规定的文本长度
- (NSString *)cutBeyondTextInLength:(NSInteger)maxLenth
{
    size_t length = strlen([self UTF8String]);
    if (length > maxLenth)
    {
        NSString *text = [self substringToIndex:self.length - 1];
        return [text cutBeyondTextInLength:maxLenth];
    }
    else
    {
        return self;
    }
}

- (CGSize)textSizeIn:(CGSize)size font:(UIFont *)font
{
    return [self textSizeIn:size font:font breakMode:NSLineBreakByWordWrapping];
}

- (CGSize)textSizeIn:(CGSize)size font:(UIFont *)afont breakMode:(NSLineBreakMode)breakMode
{
    return [self textSizeIn:size font:afont breakMode:NSLineBreakByWordWrapping align:NSTextAlignmentLeft];
}

- (CGSize)textSizeIn:(CGSize)size font:(UIFont *)afont breakMode:(NSLineBreakMode)abreakMode align:(NSTextAlignment)alignment
{
    NSLineBreakMode breakMode = abreakMode;
    UIFont *font = afont ? afont : kAppMiddleTextFont;
    
    CGSize contentSize = CGSizeZero;
    
    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
    paragraphStyle.lineBreakMode = breakMode;
    paragraphStyle.alignment = alignment;
    
    NSDictionary* attributes = @{NSFontAttributeName:font, NSParagraphStyleAttributeName:paragraphStyle};
    contentSize = [self boundingRectWithSize:size options:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading) attributes:attributes context:nil].size;
    contentSize = CGSizeMake((int)contentSize.width + 1, (int)contentSize.height + 1);
    return contentSize;
}


@end